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NACE CP2 – EXAM PREP LATEST UPDATE 2025/2026
TEST BANK| COMPLETE 500 ACCURATE QUESTIONS
AND CORRECT VERIFIED ANSWERS/ GRADED A+|
(ALL CHAPTERS COVER ED)
What is the most common iron ore?
- helophyte
- hematite
- magnesium
- calcium
- aluminum - Correct Answer - b
Which of the following metals is most active?
- magnesium
- copper
- iron
- nickel
- platinum - Correct Answer - a
Electromotive force (emf), is ____ in sign and magnitude to the electrode potential of the ___ less the electrode potential of the ____.
- unequal, cathode, anode
- unequal, anode, cathode 1 / 4
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- equal, cathode, anode
- equal, anode, cathode - Correct Answer - d
The driving force for electrochemical corrosion is ____
- current
- voltage
- resistance
- ohms
- siemens-cm - Correct Answer - b
In relation to a corrosion cell, ____ is the net transfer of electric charge per unit time
- current
- voltage
- resistance
- ohms
- siemens-cm - Correct Answer - a
If a metallic path connects two electrodes inside an electrolyte, the ____ difference will cause a ____ to flow between them
- current, voltage
- resistance, current
- resistance, voltage
- voltage, current 2 / 4
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- current, resistance - Correct Answer – d
The more useful method of organizing metals in order of their tendency to corrode is _____
- emf series
- pgp series
- nuclear series
- electron series
- galvanic series - Correct Answer - e
The ____ expresses the exact electromotive force of a cell in terms of the activities of products and reactants of the cell
- Ernest Equation
- Faraday Equation
- Ohm's Law Equation
- Nernst Equation
- Uniform Equation - Correct Answer - d
Given the Nernst Equation, using the Valence of Common Metals Table,
and using the partial Standard emf Series of Metals solve:
What is the potential of zinc in a 0.01 molar zinc chloride solution at 25C?
A) -0.892V
B) -0.287V 3 / 4
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C) -0.827V
D) -0.297V
- -0.889V - Correct Answer - c
E= -0.763 + (0.059/2) * log (0.71 *0.01/1)
= -0.827V
In reference to the temperature in a corrosion cell, in most cases, electrode at the _____ temperature becomes the ____
- lower, anode
- higher, cathode
- lower, cathode
- higher, anode - Correct Answer - d
During metal fabrication of structures, highly stressed areas of a metal will tend to be at ____ energy levels, thus more ____ than less stressed areas
- higher, active
- lower, active
- higher, inactive
- lower, inactive - Correct Answer – a
The ____ the concentration of metal ions in the electrolyte, the ____ the metal.
- lower, less active
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